module.exports = Self => {
    Self.remoteMethodCtx('replaceItem', {
        description: 'Replace item from sale',
        accessType: 'WRITE',
        accepts: [
            {
                arg: 'saleFk',
                type: 'number',
                required: true,
            },
            {
                arg: 'substitutionFk',
                type: 'number',
                required: true
            },
            {
                arg: 'quantity',
                type: 'number',
                required: true
            }
        ],
        returns: {
            type: 'object',
            root: true
        },
        http: {
            path: `/replaceItem`,
            verb: 'POST'
        }
    });

    Self.replaceItem = async(ctx, saleFk, substitutionFk, quantity, options) => {
        const myOptions = {userId: ctx.req.accessToken.userId};
        let tx;
        const $t = ctx.req.__;

        const models = Self.app.models;

        if (typeof options == 'object')
            Object.assign(myOptions, options);

        if (!myOptions.transaction) {
            tx = await Self.beginTransaction({});
            myOptions.transaction = tx;
        }

        try {
            const replaceItemQuery = {
                sql: 'CALL sale_replaceItem(?,?,?)',
                query: [saleFk, substitutionFk, quantity]
            };
            const resultReplaceItem = await Self.rawSql(replaceItemQuery.sql, replaceItemQuery.query, myOptions);
            const sale = await models.Sale.findById(saleFk, {
                fields: ['id', 'ticketFk', 'itemFk', 'quantity', 'price'],
                include: [
                    {
                        relation: 'ticket',
                        scope: {
                            fields: ['id']
                        },
                    }, {
                        relation: 'item',
                        scope: {
                            fields: ['id', 'name', 'longName']
                        }
                    }
                ]
            }, myOptions);

            const salesPersonQuery = {
                sql: 'SELECT vn.client_getSalesPersonByTicket(?)',
                query: [sale.ticketFk]
            };
            const salesPerson = await Self.rawSql(salesPersonQuery.sql, salesPersonQuery.query, myOptions);
            if (tx) await tx.commit();
            const url = await models.Url.getUrl();
            const substitution = await models.Item.findById(substitutionFk, {
                fields: ['id', 'name', 'longName']
            }, myOptions);

            const message = $t('negativeReplaced', {
                oldItemId: sale.itemFk,
                oldItem: sale.item().longName,
                oldItemUrl: `${url}item/${sale.itemFk}/summary`,
                newItemId: substitution.id,
                newItem: substitution.longName,
                newItemUrl: `${url}item/${substitution.id}/summary`,
                ticketId: sale.ticketFk,
                ticketUrl: `${url}ticket/${sale.ticketFk}/sale`
            });
            await models.Chat.sendCheckingPresence(ctx, salesPerson.id, message);

            return resultReplaceItem;
        } catch (e) {
            if (tx) await tx.rollback();
            throw e;
        }
    };
};